Subtitles stops showing after one loop

Hi guys,

for a university project I’m making a 3D game in which there are multiple objects with audios placed on them. Since there will be different languages included, I have used the subtitle function, but after one loop the subtitles stop showing… I don’t really know why.
The audio plays when silent as well)

I’m very grateful about any input or help that I can get. I’m a little frustrated…

Thank you in advance,
Lucas